Comment 2 for bug 2004659

Hey Ken. This is the part that failed.

        Running command ['unshare', '--fork', '--pid', '--', 'chroot', '/target', 'eatmydata', 'apt-get', '--quiet', '--assume-yes', '--option=Dpkg::options::=--force-unsafe-io', '--option=Dpkg::Options::=--force-confold', 'install', 'efibootmgr', 'grub-efi-amd64', 'grub-efi-amd64-signed', 'shim-signed'] with allowed return codes [0] (capture=False)
        Reading package lists...
        Building dependency tree...
        Reading state information...
        Package efibootmgr is not available, but is referred to by another package.
        This may mean that the package is missing, has been obsoleted, or
        is only available from another source

        E: Package 'efibootmgr' has no installation candidate
        E: Unable to locate package grub-efi-amd64-signed
        E: Unable to locate package shim-signed